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Page 10 of 888 Results 91 - 100 of 8878

C. L. Giusca, S. Goel, I. Llavori, R. Kumme, O. Baer, A. Prato, A. Germak
DIGITAL REPRESENTATION OF A LOAD CELL

Industry 4.0 (I4.0) revolution provides new avalanche of opportunities in the arena of manufacturing and metrology. To take advantage of this opportunity, EMRP 18SIB08 ComTraForce project began the development of digital constructs necessary for a Digital Twin of a load cell that allows, in real time, to predict, optimise and maintain desired functionality throughout the device lifetime. Specifically, its project team has been working on developing digital constructs based on experimentally validated finite element models in conjunction with analytical models. The work provides new avenues in establishing force measurement standards.

L. F. Wang, K. Ma, P. Liu, D. B. Shen, S. Zhang, N. Song, Y. Zhang
RESEARCH ON WEIGHING DESIGN OF CLASS E GROUP WEIGHTS BASED ON INTELLIGENT MEASUREMENT SYSTEM

Based on the characteristics of automatic intelligent measurement device and the demand of class E group weights value transmission, this paper proposes two measurement design methods for combined verification of class E group weight, establishes the mathematical model and analyses the uncertainty. The two combination methods are compared with the direct comparison method given by “OIML R111-1:2004”. The analysis verifies that the two component combination algorithms suitable for intelligent measurement device are effective and feasible, which is helpful to promote the application of intelligent measurement technology in the field of high-accuracy group weights transmission.

L. F. Wang, K. Ma, D. B. Shen, Y. Zhang, S. Zhang, P. Liu, N. Song
RESEARCH ON INTELLIGENT AUTOMATIC MEASUREMENT SYSTEM OF LARGE MASS

This paper describes a set of intelligent measurement system for large mass. The system realises the intelligent operation of the process of (100 kg ~ 1 000 kg) weights calibration, including loading and unloading reference weights, loading and unloading test weights, calculating data, and providing calibration records. These intelligent operations are realised by the design of the equal arm electromagnetic balance, loading and unloading weights, transmission mechanism, and the central intelligent control software. The system improves the accuracy and work efficiency of large weights calibration.

A. J. Knott, R. S. Oliveira
EFFECTS OF FORCE APPLICATION RATE ON TRANSDUCER PERFORMANCE

This paper compares static and continuous performance characteristics of a force transducer, determining the effect of force application rate, force application principle, and filter settings on the observed differences. It also develops a methodology for identifying and correcting possible non synchronisation between instrument channels.

M. J. A. Solis, C. Giusca, S. Goel
DIGITAL TWIN AS A TRANSFORMATIVE APPROACH TO CLASSICAL FORCE MEASUREMENT SYSTEMS

Like any other measuring device, load cells are vital in ensuring that products meet quality and safety requirements; therefore, they must always be accurate and reliable. Creep affects measurement results and the useful life of load cells but is not well understood. Digital twins create a virtual representation of an instrument that can be used to understand, monitor, and predict load cell behaviour. This study found that the significant source of creep originates from the strain gauge's carrier matrix and that the Larson-Miller Parameter equation can be used to support the digital twin development of the load cell.

Z. Zelenka, S. Alisic, A. Malengo
MODELLING SUBDIVISION IN MASS METROLOGY

Subdivision is a crucial technique in mass metrology because it allows the determination of the mass of weights of various nominal values and the realisation of the mass scale.
This technique is usually based on complicated mathematics. The current models are generally sufficient for many practical aims but far from the best performance.
Project 19RPT02, “Improvement of the realisation of the mass scale” (EMPIR Call 2019 –Research Potential), has been, among others, investigating an improved model for the calculations.

B. Aydemir, H. Dizdar, C. Vatan
THE METHOD PROPOSAL FOR CALIBRATION OF THE ALIGNMENT CELL

The alignment measurements of material testing machines can be made according to ASTM E1012 and ISO 23788 standards. These standards provide information on alignment devices, alignment measurement, and post-measurement calculations. However, they can't make a definition for the calibration of the alignment measuring device. For this purpose, this article has been prepared as a recommendation for the calibration method of the alignment measuring devices and the evaluation after the measurements. In this study, the calibration method of the alignment measuring device is defined and the calculations are given clearly with two different numerical examples.

B. Aydemir, H. Dizdar, C. Vatan
INVESTIGATION OF THE EFFECT OF WAITING TIME IN FORCE STEPS DURING FORCE CALIBRATION

In this study, the effects of the waiting time in the force steps on the calibration results during the calibration of force measuring devices was investigated. For measurements, strain gauge force measuring device and piezoelectric force measuring device were selected. Both force transducers are calibrated to the ISO 376 standard. The waiting times in force steps during calibration were taken as 1 s, 10 s and 60 s. The effects on the results obtained at different waiting times was investigated. Changes in results for both sensors were examined.

Y. Yamakawa, T. Yamazaki
SIMPLIFIED MODEL OF MASS MEASUREMENT SYSTEM WITH CONSIDERATION OF VARIATION OF FULCRUM POSITION

This paper focuses on an analysis of behaviour of a dynamic mass measurement system. The goal of this paper is to propose a dynamic model of the system, which can reproduce dynamic behaviour to floor vibration. The dynamics of our system with electro-magnetic force compensation is approximated by a mass-spring-damper system, and an equation of motion is obtained. Model parameters are also estimated from experimental data. Then, comparisons of the proposed model with the previous model are carried out, and the effectiveness is also confirmed.

H. Dizdar, B. Aydemir, C. Vatan
EVALUATION OF THE EFFECT OF DYNAMIC VERIFICATION ON DIFFERENT TYPES OF FORCE SENSORS

This study includes measurements carried out according to ASTM E467 international standard by using different loading rates also force waveform sine, in order to comprehensively investigate dynamic verification in force sensors which have two different measuring principles. It has been aimed to reveal and evaluate the effect of dynamic verification on different types of force sensors.

Page 10 of 888 Results 91 - 100 of 8878